484 lines
17 KiB
C#
484 lines
17 KiB
C#
using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Timers;
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using Cysharp.Threading.Tasks;
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using kcp2k;
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using Timer = System.Timers.Timer;
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using System.Threading.Tasks;
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using System.IO;
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using System.Numerics;
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using System.Reflection;
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using BITKit.Net.Examples;
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using Newtonsoft.Json;
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namespace BITKit.Net
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{
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public class KcpNetClient:INetClient,INetProvider
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{
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public event Action OnStartConnect;
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public event Action OnConnected;
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public event Action OnDisconnected;
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public event Action OnConnectedFailed;
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public bool IsConnected => client.connected;
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public bool ManualTick { get; set; }
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public int Ping { get; private set; }
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public int Id { get; private set; } = -1;
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private readonly KcpClient client;
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private readonly Queue<byte[]> commandQueue = new();
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private DateTime _lastPingTime = DateTime.Now;
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private readonly Timer _timer = new(100)
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{
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AutoReset = true
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};
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private readonly GenericEvent _events = new();
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private readonly ValidHandle _isConnected = new();
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private int _index = int.MinValue;
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private readonly ConcurrentDictionary<int, object> _p2p = new();
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private readonly ConcurrentDictionary<string,Func<object,UniTask<object>>> _rpc = new();
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private readonly ConcurrentDictionary<string,MethodInfo> _rpcMethods = new();
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private readonly ConcurrentDictionary<string,object> _rpcHandles = new();
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public KcpNetClient()
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{
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client = new KcpClient(
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OnConnectedInternal,
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OnData,
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OnDisconnectInternal,
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OnError,
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KCPNet.Config
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);
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_timer.Elapsed += Tick;
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BIT4Log.Log<KcpNetClient>("已创建KCP客户端");
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AddCommandListener<NetClientAllocateIdCommand>(x =>
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{
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Id = x.Id;
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});
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_isConnected.AddListener(ConnectionCallback);
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}
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private async void ConnectionCallback(bool x)
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{
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if (x is false) return;
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await UniTask.SwitchToSynchronizationContext(BITApp.SynchronizationContext);
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OnConnected?.Invoke();
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}
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private void Tick(object sender, ElapsedEventArgs e)
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{
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if (!ManualTick)
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Tick();
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}
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public async void Disconnect()
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{
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client.Disconnect();
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try
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{
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await UniTask.SwitchToSynchronizationContext(BITApp.SynchronizationContext,BITApp.CancellationToken);
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OnDisconnected?.Invoke();
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}
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catch (OperationCanceledException){}
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}
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public async UniTask<bool> Connect(string address = "127.0.0.1", ushort port = 27014)
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{
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if (BITApp.SynchronizationContext is not null)
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await UniTask.SwitchToSynchronizationContext(BITApp.SynchronizationContext, BITApp.CancellationToken);
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OnStartConnect?.Invoke();
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await UniTask.SwitchToThreadPool();
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try
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{
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client.Connect(address, port);
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for (var i = 0; i < 5; i++)
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{
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client.Tick();
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await Task.Delay(100);
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}
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_timer.Start();
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client.Send(new[] { (byte)NetCommandType.Heartbeat }, KcpChannel.Reliable);
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if (BITApp.SynchronizationContext is not null)
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await UniTask.SwitchToSynchronizationContext(BITApp.SynchronizationContext);
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if (client.connected)
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{
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SendServerMessage(Environment.MachineName);
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}
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for (var i = 0; i < 5; i++)
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{
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client.Tick();
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await Task.Delay(100);
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}
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return client.connected;
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}
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catch (Exception e)
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{
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BIT4Log.LogException(e);
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if (BITApp.SynchronizationContext is not null)
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await UniTask.SwitchToSynchronizationContext(BITApp.SynchronizationContext);
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OnConnectedFailed?.Invoke();
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return false;
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}
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}
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private void OnData(ArraySegment<byte> bytes, KcpChannel channel)
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{
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try
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{
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OnDataInternel(bytes, channel);
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}
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catch (Exception e)
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{
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BIT4Log.LogException(e);
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}
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}
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private async void OnDataInternel(ArraySegment<byte> bytes, KcpChannel channel)
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{
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using var ms = new MemoryStream(bytes.ToArray());
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using var reader = new BinaryReader(ms);
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var type = (NetCommandType)ms.ReadByte();
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switch (type)
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{
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case NetCommandType.Message:
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reader.ReadBoolean();
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reader.ReadString();
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BIT4Log.Log<KcpClient>($"已收到消息:{reader.ReadString()}");
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break;
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case NetCommandType.AllClientCommand:
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case NetCommandType.Command:
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var command = BITBinary.Read(reader);
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if (command is object[] { Length: 1 } objs) command = objs[0];
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//BIT4Log.Log<KcpClient>($"已收到指令:{command},值:\n{JsonConvert.SerializeObject(command, Formatting.Indented)}");
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try
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{
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if (BITApp.SynchronizationContext is not null)
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await UniTask.SwitchToSynchronizationContext(BITApp.SynchronizationContext,
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BITApp.CancellationToken);
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_events.Invoke(command.GetType().FullName, command);
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}
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catch (OperationCanceledException)
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{
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}
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catch (Exception e)
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{
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BIT4Log.LogException(e);
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}
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break;
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case NetCommandType.Heartbeat:
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client.Send(new[] { (byte)NetCommandType.Heartbeat }, KcpChannel.Reliable);
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_isConnected.AddElement(this);
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break;
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case NetCommandType.Ping:
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Ping = (int)(DateTime.Now - _lastPingTime).TotalMilliseconds;
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break;
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case NetCommandType.ReturnToClient:
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var id = reader.ReadInt32();
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try
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{
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if (reader.ReadBoolean())
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{
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var value = BITBinary.Read(reader);
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_p2p.TryAdd(id,value);
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}
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else
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{
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var message = reader.ReadString();
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_p2p.TryAdd(id,new Exception(message));
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}
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}
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catch (Exception e)
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{
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BIT4Log.Warning<INetClient>($"请求返回失败:{id}");
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BIT4Log.LogException(e);
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}
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break;
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case NetCommandType.GetFromClient:
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try
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{
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var requestId = reader.ReadInt32();
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using var returnMS = new MemoryStream();
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await using var returnWriter = new BinaryWriter(returnMS);
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returnWriter.Write((byte)NetCommandType.ReturnToServer);
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returnWriter.Write(requestId);
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try
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{
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object value = null;
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if (reader.ReadBoolean())
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{
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var path = reader.ReadString();
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var pars = BITBinary.Read(reader).As<object[]>();
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if (_rpcMethods.TryGetValue(path, out var methodInfo))
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{
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var isAwaitable = methodInfo.ReturnType.GetMethod(nameof(Task.GetAwaiter)) != null;
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var handle = _rpcHandles[path];
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if (isAwaitable)
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{
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dynamic result = methodInfo.Invoke(handle, pars)!;
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value = await result;
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}
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else
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{
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value = methodInfo.Invoke(handle, pars);
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}
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returnWriter.Write(true);
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BITBinary.Write(returnWriter, value);
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}
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else
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{
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returnWriter.Write(false);
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returnWriter.Write("未找到对应的Rpc方法");
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}
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}
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else
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{
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var commandObj = BITBinary.Read(reader)
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.As<object[]>()[0];
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var func = _rpc[commandObj.GetType()!.FullName!];
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value = await func.As<Func<object, UniTask<object>>>().Invoke(commandObj);
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}
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returnWriter.Write(true);
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BITBinary.Write(returnWriter, value);
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}
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catch (Exception e)
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{
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BIT4Log.LogException(e);
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returnWriter.Write(false);
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returnWriter.Write(e.Message);
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}
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var _bytes = returnMS.ToArray();
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commandQueue.Enqueue(_bytes);
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}
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catch(Exception e)
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{
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BIT4Log.LogException(e);
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}
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break;
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default:
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BIT4Log.Log<KcpClient>($"未知消息类型:{type},字节:{(byte)type}");
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if (bytes.Array != null)
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BIT4Log.Log<KcpClient>(
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$"已收到:({Id}, {BitConverter.ToString(bytes.Array, bytes.Offset, bytes.Count)} @ {channel})");
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break;
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}
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}
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private async void OnConnectedInternal()
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{
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if (BITApp.SynchronizationContext is not null)
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await UniTask.SwitchToSynchronizationContext(BITApp.SynchronizationContext);
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OnConnected?.Invoke();
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BIT4Log.Log<KcpNetClient>("已连接");
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}
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private async void OnDisconnectInternal()
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{
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BIT4Log.Log<KcpNetClient>("断开连接");
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_timer.Stop();
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try
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{
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if (BITApp.SynchronizationContext is not null)
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await UniTask.SwitchToSynchronizationContext(BITApp.SynchronizationContext,
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BITApp.CancellationToken);
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_isConnected.RemoveElement(this);
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OnDisconnected?.Invoke();
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}
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catch (OperationCanceledException)
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{
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}
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}
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private void OnError(ErrorCode errorCode, string message)
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{
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BIT4Log.Log<KCPNetServer>($"{client.remoteEndPoint}异常:{errorCode},{message}");
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}
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public void ServerCommand<T>(T command = default)
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{
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Send(NetCommandType.Command,command);
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}
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public void AllClientCommand<T>(T command = default)
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{
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Send(NetCommandType.AllClientCommand,command);
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}
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public void ClientCommand<T>(int id, T command)
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{
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Send(NetCommandType.TargetCommand,id,command);
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}
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public async UniTask<T> GetFromServer<T>(string path = default,params object[] pars)
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{
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var id = _index++;
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using var ms = new MemoryStream();
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await using var writer = new BinaryWriter(ms);
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writer.Write((byte)NetCommandType.GetFromServer);
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writer.Write(id);
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if (string.IsNullOrEmpty(path))
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{
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writer.Write(false);
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}
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else
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{
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writer.Write(true);
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writer.Write(path);
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}
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BITBinary.Write(writer,pars);
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var bytes = ms.ToArray();
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commandQueue.Enqueue(bytes);
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var startTime = DateTime.Now;
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while (true)
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{
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if(DateTime.Now-startTime>TimeSpan.FromSeconds(5) || IsConnected is false)
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throw new TimeoutException();
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if (_p2p.TryRemove(id, out var value))
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{
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if (value is Exception e)
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{
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throw e;
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}
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return value.As<T>();
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}
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await Task.Delay(100);
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}
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}
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public UniTask<T> GetFromClient<T>(int id,string path, params object[] pars)
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{
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throw new NotImplementedException();
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}
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public void AddRpcHandle(object rpcHandle)
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{
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foreach (var methodInfo in rpcHandle.GetType().GetMethods())
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{
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var att = methodInfo.GetCustomAttribute<NetRpcAttribute>();
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if(att is null)continue;
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_rpcMethods.TryAdd(methodInfo.Name, methodInfo);
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_rpcHandles.TryAdd(methodInfo.Name, rpcHandle);
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}
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}
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public void AddCommandListener<T>(Action<T> handle)
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{
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_events.AddListener<T>(handle);
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}
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public void AddCommandListener<T>(Func<T,UniTask<T>> func)
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{
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_rpc.TryAdd(typeof(T).FullName, F);
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return;
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async UniTask<object> F(object o)
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{
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return await func.Invoke((T)o);
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}
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}
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public void RemoveCommandListener<T>(Func<T,UniTask<T>> func)
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{
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_rpc.TryRemove(typeof(T).FullName, out _);
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}
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public void RemoveCommandListener<T>(Action<T> handle)
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{
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_events.RemoveListener<T>(handle);
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}
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public void SendRT(string rpcName, params object[] pars)
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{
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throw new NotImplementedException();
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}
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public void SendTargetRT(int id, string rpcName, params object[] pars)
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{
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throw new NotImplementedException();
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}
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public void SendAllRT(string rpcName, params object[] pars)
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{
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throw new NotImplementedException();
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}
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public void SendServerMessage(string message)
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{
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var bytes = BinaryBuilder
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.Create()
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.Write(((byte)NetCommandType.Message))
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.Write(message)
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.Build();
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client.Send(bytes, KcpChannel.Reliable);
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}
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#if UNITY_EDITOR
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private readonly IntervalUpdate _pingInterval = new(1);
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#endif
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public void Tick()
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{
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try
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{
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while (commandQueue.TryDequeue(out var bytes))
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{
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client.Send(bytes, KcpChannel.Reliable);
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}
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#if UNITY_EDITOR
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if (_pingInterval.AllowUpdate)
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{
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_lastPingTime = DateTime.Now;
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client.Send(new[] { (byte)NetCommandType.Ping }, KcpChannel.Reliable);
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}
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#endif
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client.Tick();
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}
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catch (Exception e)
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{
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BIT4Log.LogException(e);
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}
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}
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public void HandShake()
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{
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// send client to server
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client.Send(new byte[]{0x01, 0x02}, KcpChannel.Reliable);
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}
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private void Send(NetCommandType commandType,params object[] values)
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{
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var bytes = BinaryBuilder
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.Create()
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.Write((byte)commandType)
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.WriteObject(values)
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.Build();
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commandQueue.Enqueue(bytes);
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//client.Send(bytes, KcpChannel.Reliable);
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}
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}
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} |